diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-06-10 21:11:57 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 09:03:47 -0700 |
| commit | 09838df9d2ff31252a69a8393ea96a9734eba7e8 (patch) | |
| tree | 3278c5bd22160e9ea6650420dd8e9c411bf5c08c /drivers/net/dummy.c | |
| parent | a459fdd31c96993f6fcee4879eb20bc1e7bac2ed (diff) | |
dummy: fix rcu_sched self-detected stalls
[ Upstream commit 16b0dc29c1af9df341428f4c49ada4f626258082 ]
Trying to "modprobe dummy numdummies=30000" triggers :
INFO: rcu_sched self-detected stall on CPU { 8} (t=60000 jiffies)
After this splat, RTNL is locked and reboot is needed.
We must call cond_resched() to avoid this, even holding RTNL.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/dummy.c')
| -rw-r--r-- | drivers/net/dummy.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c index 442d91a2747b..bab0158f1cc3 100644 --- a/drivers/net/dummy.c +++ b/drivers/net/dummy.c @@ -187,8 +187,10 @@ static int __init dummy_init_module(void) rtnl_lock(); err = __rtnl_link_register(&dummy_link_ops); - for (i = 0; i < numdummies && !err; i++) + for (i = 0; i < numdummies && !err; i++) { err = dummy_init_one(); + cond_resched(); + } if (err < 0) __rtnl_link_unregister(&dummy_link_ops); rtnl_unlock(); |